tests: drivers: memc: Rework S(D)RAM test with ztest

* Reworked the stm32 SDRAM test to be more generic
* Added SRAM entries
* Moved to new ztest API

Signed-off-by: Pieter De Gendt <[email protected]>

Author: pdgendt

tests/drivers/memc/stm32_sdram/CMakeLists.txt renamed to tests/drivers/memc/ram/CMakeLists.txt

@@ -1,2 +1,3 @@
 CONFIG_ZTEST=y
 CONFIG_MEMC=y
+CONFIG_ZTEST_NEW_API=y

tests/drivers/memc/stm32_sdram/prj.conf renamed to tests/drivers/memc/ram/prj.conf

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2020, Teslabs Engineering S.L.
+ * Copyright (c) 2022, Basalte bv
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/linker/devicetree_regions.h>
+#include <zephyr/zephyr.h>
+#include <zephyr/ztest.h>
+
+/** Buffer size. */
+#define BUF_SIZE 64U
+#define BUF_DEF(label) static uint32_t buf_##label[BUF_SIZE]			\
+	Z_GENERIC_SECTION(LINKER_DT_NODE_REGION_NAME(DT_NODELABEL(label)))
+
+/**
+ * @brief Helper function to test RAM r/w.
+ *
+ * @param mem RAM memory location to be tested.
+ */
+static void test_ram_rw(uint32_t *mem)
+{
+	/* fill memory with number range (0, BUF_SIZE - 1) */
+	for (size_t i = 0U; i < BUF_SIZE; i++) {
+		mem[i] = i;
+	}
+
+	/* check that memory contains written range */
+	for (size_t i = 0U; i < BUF_SIZE; i++) {
+		zassert_equal(mem[i], i, "Unexpected content");
+	}
+}
+
+#if DT_NODE_HAS_STATUS(DT_NODELABEL(sdram1), okay)
+BUF_DEF(sdram1);
+#endif
+#if DT_NODE_HAS_STATUS(DT_NODELABEL(sdram2), okay)
+BUF_DEF(sdram2);
+#endif
+#if DT_NODE_HAS_STATUS(DT_NODELABEL(sram1), okay)
+BUF_DEF(sram1);
+#endif
+#if DT_NODE_HAS_STATUS(DT_NODELABEL(sram2), okay)
+BUF_DEF(sram2);
+#endif
+
+ZTEST_SUITE(test_ram, NULL, NULL, NULL, NULL, NULL);
+
+ZTEST(test_ram, test_sdram1)
+{
+#if DT_NODE_HAS_STATUS(DT_NODELABEL(sdram1), okay)
+	test_ram_rw(buf_sdram1);
+#else
+	ztest_test_skip();
+#endif
+}
+
+ZTEST(test_ram, test_sdram2)
+{
+#if DT_NODE_HAS_STATUS(DT_NODELABEL(sdram2), okay)
+	test_ram_rw(buf_sdram2);
+#else
+	ztest_test_skip();
+#endif
+}
+
+ZTEST(test_ram, test_sram1)
+{
+#if DT_NODE_HAS_STATUS(DT_NODELABEL(sram1), okay)
+	test_ram_rw(buf_sram1);
+#else
+	ztest_test_skip();
+#endif
+}
+
+ZTEST(test_ram, test_sram2)
+{
+#if DT_NODE_HAS_STATUS(DT_NODELABEL(sram2), okay)
+	test_ram_rw(buf_sram2);
+#else
+	ztest_test_skip();
+#endif
+}

tests/drivers/memc/ram/src/main.c

@@ -0,0 +1,12 @@
+tests:
+  drivers.memc.stm32_sdram:
+    tags: drivers memc
+    depends_on: memc
+    filter: dt_compat_enabled("st,stm32-fmc-sdram")
+  drivers.memc.smc_sram:
+    tags: drivers memc
+    depends_on: memc
+    filter: dt_compat_enabled("atmel,sam-smc")
+    platform_allow: sam4s_xplained
+    integration_platforms:
+      - sam4s_xplained